Blade for road maintainers



Jan. 17, 1933. w. J. MATTICE BLADE FOR ROAD- MAINTAINERS 2 Sheets-Sheetm@ W .O 0 O O. O o

Gttorneg Jan. 17, 1933. w. J. MA1-TICE BLADE FOR ROAD MAINTAINERS 2Sheets-Sheet 2 Filed NOV. 2l, 1951 Snucntor Patented Jan. 17, 1933UNITED; STATES yBLADF *ron ROAD iierAIiv'rAnvnnsl .liprlicationkmea-Nnvemberfm, 1931.y semina-(576,581:

The present Linvention relates toimprovements inf planingbladesl forroadI ,maine tainers, and has for anobj ect, broadly speak-f ing, tofprovidesuch a construction. for; the

earth-moving members A of. road-,maintainers that the surface of the`ground on roadway will be cut or planedl smoothly,-and wherebydepressions yor Apocketsthereofwill be iilled.- i Another fobject of.the invention iis to pro- -A 7.0 vide an earth-movingmemberfadapted-etoplane and uniformly smooth thesu-rfaceof the' road and which issoconstructed and' adapted for: usefthat` it Y may beemployed I in:y

connection with road surfacing machines` of 151any. type.; Y

A further object offtheinvention isptoL provide-an earth-movingfmemberfor road j;

dotted line 6-1-6 of vFigure 3 and looking in thedirectionof,the,a1roWs,-and1 `Figure 7 is an end view of a modified formmaintainers consisting ,of `an arcuate planing blade detachably mountedupon a supporte 20. ing plate in such manner that `the bladewill havetwo pointsor lines of'` contact; upon:y

theroadway to permit ireversibility. of said contact points, and toprovide"meanswl-iereby said contact points f become automatically 25.sharpened in use, thisbeingof advantage.

in instances-where. gravel or` similari. hard substances are encounteredon road bed.;

A still further and-importantk object of the invention.l is to.providefa scraper or. planer bladeA having two pointsof contactiV withthe roadway and for this reason of `rigid construction, wherebyYFchattering7 of. the;

blade is avoided.l insuring smooth, cutting and planing of a road bedYand ehminatmg corrugationsror` rough contours thereof. i

Astill furtherobject ofthefinvention is` to provide ani-improvedscrapingtblade for road maintainers `which willhave double contact alongspaced parallelflines ywith the yroadway tofimpart aistabilizing eecttothe blade besides giving toY it L advantages., of reversibility andself-sharpening.i

Withthe foregoingand other objects in view,l the invention willbeY more,.fully de.v

l scribed hereinafter, and fwill ,be more parproved blade,

y*blade 1811s removablefrom the arms`12 and reversible, and providedwith a sharp cutting' ticularly pointed v.out in theiclaimsiappended Inthe'v v drawings, whereinr like symbols re.- v

.afer to like or correspondingparts through- Y out the several vlews,

Figure 1 1s a perspective view of. a road maintainer .showing.jthe.improved planing blade; applied thereto ina position of use..

Figure 2 is a fragmentary perspectiveview.

Figure 3 is a top plan View of the provedblade. y Figure 4 isa sideelevation of .the.same. 1 Figure 5 isa bottomt plan View of the im-Figure 6 isatvertical section Ytaken on the .road 'maintainerincorporatinginits convstruction'a horizontal rotatable :turntable 11,70V

drop-arms 12 carried thereby, a blade 13 sup.-

Y ported ,by the farms 12, ,and means lfor lraising .and lowering thearms .12 and rotating' the turntable 11; i

Such means mayv comprise any conventionval arrangement of shafts, gearsor bell crank .y levers.

The improved blade according tothe pres- `ent invention consists of avertically dis-V posed tang 14 having a number of apertures throughwhich bolts, rivets or other zfastenings 15 may be passed to permanentlyorrre-` movably'fsecurethe tang 14 to the bladenl. As heretoforepracticed inthe-art, the

edge'l. .f i y f The use *ofvsuch blade imparts a rippled',

corrugated. or wash-board-like4 contoury to a roadwayinithat it issusceptible of, and` de-y scribes, minute vertical reciprocatingmovements, being held against the roadway by means of the weight of thearms 12 and blade 13, or engaging against the roadway by means ofsprings in a well known manner.

In the operation of such machine it is essential that the blade bepressed firmly desired, the new blade may be provided with a rectangularconfiguration as indicated at 18 in Figure 7. Figure 7 is otherwise likeFigure 2 and the other figures in the case.

Dependent from the tang 14 and preferably integral therewith is anarcuate member or blade 19. As best shown in Figure 7 this arcuatemember or blade presents a forward cutting edge 20 and a trailingcutting edge 20. `These cutting edges 2O and 20 may be reversed. f

Adjacent the cutting edges 2 0 and 20 are the sole surfaces 21 ofthe'blade 19 which are in contact with the roadway at all times, thusA`providing two substantially parallel and elongated bearing surfaces ofconsiderable width.

The improved blade 19 is comparatively massive and heavy inconstruction; and, therefore, while engaged against a road surface,particularly one having gravel embedded therein, the road contactsurfaces 21 of the improved blade will become automatin cally sharpenedin use, while at the same time planing off thesurface of a road.

In operation, and particularly referring torFigure 2, the roadway 'isindicated at 30 upon which,forwardly of the blade 19 are showncorrugations 31, which might have been made by the old type blade. Asthe new-'blade 19 is drivenV forwardly over the road surface 30, theforward cutting edge 20 will plane off the upwardly projectilng`portions of the corrugations 31 and produce a quantity of loose roadmaterial such as may pass under the cutting edge 20 and will be engagedagainst the rear cutting edge 20', theV accumulation being indicated .inFig,- ure 2. l

Such rear edge 20', in its forward movement, will dispose thissurplus,'loose road material into the interstices of the roadway 30,such as the depression indicated at 32: such depression becoming filledand backed after the blade has passed thereover, as ina dicated at 33.

When the forward cutting edge 2O of the blade 19 becomes dull throughuse, the blade is reversed bringing the trailing edge 20 forward, whichtrailing edge has been undergoing a sharpening process during its froadway or that a previously corrugated` roadway will be leveled bystriking ofi' the projecting portions and compacting loose portions inthe' depressions.

From the foregoing description it is thought to be obvious that a bladefor road maintainers constructed in accordance with my invention isparticularly well adaptedA so f for use by reason of theconven'ience'and'fa` L cility with which it may be assembled andoperated, and it will also be obvious that my invention is susceptibleof some change and V modification without departing from the principlesand spirit thereof, and for this i reason I do not Wish to be understoodas limiting myself to the precise arrangement and, formation of theseveral parts herein shownV in carrying outmy invention in cept asherein claimed'.` Y

Whatis claimed is f 1. An improved bladey for scraping roads vcomprising a massive substantially arcuate body having a supportingtangvextendingupwardly from approximately the central por-Y tionthereof, sole surfacesupon opposite edge practice ex portions of thearcuate blade adaptedl to rest simultaneously upon the road surface tobe planed, and sharp reversible cutting edges` outwardly of saidsole'surfaces.V

2. An improved blade for scraping comprising a'substantially arcuatebody, a tang extending upwardly" from said body, sole supports uponoppositeedge portions of the arcuate blade adapted` to restsimultaneously upon the surface to be planed, and

roads i sharp cutting edges outward of said sole sup-V ports, saidcutting edges adaptedk to bere versed whereby a'self sharpening cuttingedge is presented.

3. In a road maintainer having a blade, ar

scraper comprising a massive'substantially` arcuate body, a tangextending upwardlyv 12o-J from said scraperv for connecting said bladeland scraper together, sole supports upon oppositeedge portions of thearcuate scraper adapted to rest simultaneously upon the surface to beplaned and sharp cutting edgesl outward of said sole supports, said.cutting edges adapted to be reversed whereby aself Y sharpening cuttingedgesis presented.

4. In a road maintainer having a blade, a scraping` blade comprising amassive substantially arcuate body, a tang extending up'- Wardly fromsaid scraping blade, said tang having its inner upper portion beveledfor connection to the first mentioned blade, road bearing surfaces onopposite edge portions of said arcuate body, and cutting edges out-Wardly of said bearing surfaces, said cutting edges adapted to bereversed whereby a self sharpening edge is presented.

In testimony whereof, I have aixed my signature.

WILLIAM J. MATIIGE.

